Can't figure out if our new to us 2010 base model (no GPS) has Bluetooth availability. ( Frustrating how the 2010 Owner's Manual covers all 2010 models!)
We just got a used 2010 to replace the wife's 2006 which got totaled. http://www.toyota.com/t3Portal/document/om/OM47668U/pdf/sec_03_03.pdf page 333 You have to use the voice prompts to setup the phone with the standard radio.
You need to have model III or higher to have it. See Toyota Vehicles : Toyota Announces Prices for 2010 Prius / Toyota. If you don't have the JBL stereo on the '10, you don't have BT either. IIRC, if you had it, there should be phone related buttons on the steering wheel as well.